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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-177) CapacityScheduler - adding a queue while the RM is running has wacky results
Date Thu, 25 Oct 2012 10:49:22 GMT

    [ https://issues.apache.org/jira/browse/YARN-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13484037#comment-13484037
] 

Hudson commented on YARN-177:
-----------------------------

Integrated in Hadoop-Yarn-trunk #16 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/16/])
    YARN-177. CapacityScheduler - adding a queue while the RM is running has wacky results
(acmurthy vai tgraves) (Revision 1401668)

     Result = SUCCESS
tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1401668
Files : 
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CSQueue.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/ParentQueue.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java

                
> CapacityScheduler - adding a queue while the RM is running has wacky results
> ----------------------------------------------------------------------------
>
>                 Key: YARN-177
>                 URL: https://issues.apache.org/jira/browse/YARN-177
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 0.23.3
>            Reporter: Thomas Graves
>            Assignee: Arun C Murthy
>            Priority: Critical
>             Fix For: 3.0.0, 2.0.3-alpha, 0.23.5
>
>         Attachments: YARN-177.patch, YARN-177.patch, YARN-177.patch, YARN-177.patch
>
>
> Adding a queue to the capacity scheduler while the RM is running and then running a job
in the queue added results in very strange behavior.  The cluster Total Memory can either
decrease or increase.  We had a cluster where total memory decreased to almost 1/6th the capacity.
Running on a small test cluster resulted in the capacity going up by simply adding a queue
and running wordcount.  
> Looking at the RM logs, used memory can go negative but other logs show the number positive:
> 2012-10-21 22:56:44,796 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue:
assignedContainer queue=root usedCapacity=0.0375 absoluteUsedCapacity=0.0375 used=memory:
7680 cluster=memory: 204800
> 2012-10-21 22:56:45,831 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue:
completedContainer queue=root usedCapacity=-0.0225 absoluteUsedCapacity=-0.0225 used=memory:
-4608 cluster=memory: 204800
>   

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